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moo, 2007-07-07 15:30


TracNav(DocsToc) {{{
#!rst =======================
Trigger before Download =======================

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Module: mod_trigger_b4_dl
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.. meta::
:keywords: lighttpd, hot-linking, deep-linking

.. contents:: Table of Contents

Description ===========

Anti Hotlinking:

  • if user requests ''download-url'' directly, the request is denied and he is redirected to ''deny-url'
  • if user visits ''trigger-url'' before requesting ''download-url'', access is granted
  • if user visits ''download-url'' again after ''trigger-timeout'' has elapsed, the request is denied and he is redirected to ''deny-url''

The trigger information is either stored locally in a gdbm file or remotely in memcached.

Requirements
------------

Options =======

::

trigger-before-download.gdbm-filename = "/home/weigon/testbase/trigger.db" 
trigger-before-download.memcache-hosts = ( "127.0.0.1:11211" )
trigger-before-download.trigger-url = "^/trigger/"
trigger-before-download.download-url = "^/download/"
trigger-before-download.deny-url = "http://192.168.1.5:1025/index.html"
trigger-before-download.trigger-timeout = 10

If both trigger-before-download.gdbm-filename and
trigger-before-download.memcache-hosts is set gdbm will take precedence.

Installation ============

memcached should be started with the option -M as we don't want to remove entry if the memory is full.

}}}

Updated by moo over 16 years ago · 5 revisions